The terms of the deal were not disclosed, and Walters didn't disclose when the company will move into the buildings, which total about 128,000 square feet.

The move is part of the planned expansion the company announced last month. It will add as many as 3,500 jobs over the next three years, including about 1,000 in the Alamo City, where it employs about 16,400.

Another 1,000 new employees are slated for Phoenix, where the company is adding 380,000 square feet of space to its 644,000-square-foot campus.

USAA hasn't disclosed where the other 1,500 workers will be based, but the company has said it's committed to locations where it already operates.

The positions to be filled include: customer contact representatives in investments, insurance, banking and claims; underwriters; information security specialists; business and financial analysts; and modeling and statistical analysts.

Overall, USAA employs about 24,000. The additional workers would represent a 14.6 percent increase in its workforce.

The company had to look for lease space because it currently occupies about 90 percent of the 5 million square feet at its 280-acre campus. The company did not discuss its long-term plans for growth in the Alamo City.

USAA will fill about 39,000 square feet at University Park Tech Center III and 88,000 square feet at University Park Tech Center IV. The leases take both buildings to 100 percent occupancy.